Odd accident (not me)

[Rolls_imp]

As kids, we used to throw an old record album on the street in our neighborhood and each of us would take turns riding over it and applying the rear brake. Maybe 12-15 mph? The second the rear tire hit that plastic album, it was like sheer ice, maybe worse, if that's imaginable. Zero traction and a wild ride, if you could keep it up. Wonder if the sign under the front tire he encountered was similarly slick.